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c18e323564
Filipe reported a problem where sometimes he'd get an ENOSPC abort when running delayed refs with generic/619 and the free space tree enabled. This is partly because we do not reserve space for modifying the free space tree, nor do we have a block rsv associated with that tree. The delayed_refs_rsv tracks the amount of space required to run delayed refs. This means 1 modification means 1 change to the extent root. With the free space tree this turns into 2 changes, because modifying 1 extent means updating the extent tree and potentially updating the free space tree to either remove that entry or add the free space. Thus if we have the FST enabled, simply double the reservation size for our modification. Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.